System of heating cars by steam and hot water



( OOOOOO 3 SheetsSheet 1..

R. D. KIMBAL'L:

SYSTEM OF H'EATING'OARS BY STEAM AND HOT WATER. I No. 416,844. IPatented Dec. 10, 1889! 3 Sheets-Sheet 2.-

Patented Dec. 10, 1889.

(No Model.)

R. D. KIMBA LL SYSTEM OF HEATING CARS BY STEAM AND HOT WATER.

(No Model.) 3 Shets-Sheet s.

R. D KiMBAL L. SYSTEM OF HEATING GARS BY STBAM AND HOIWATER. No.416,844. Patented Dec. 10, 13 9,

V UNITED STATES.

PATENT "OF ICE.

RICHARD .1). KIMBALIJQOF]BosroN, MASSACHUSETTS, AssIoNoaTo THE- KIMBALLAUTOMATIC CAR HEATING COMPANY, OF PORTLAND,MAINE.

SYSTEM OF HEATING CARSEBY STEAM AND \H'OT WATER.

srnorrrcacrroiv forming part or LettersPatent No.41e,e44,' datedDecember 10, 1889. Application filed uly 2,1888. seah No.'27s,7se. (Nomodel.)

To all whom it nmyconcern:

Be it known that I, RICHARD D. KIMBALL,

of Boston, in the county of Suifolk and State of Massachusetts, acitizen of the United States, have invented a new and useful Im-.

provement in a System of Heating Railway- Oars by Steam and Hot ater, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming a part of this speci[ication, in explaining its nature.

The invention relates to the system of heating railway and other carswhich employs steam supplied from the locomotive or other central orcommon source of supply; and its object is to obtain the greatestefficiency from a given quantity of steam by using in connection withthe pipes for the steam-distribir tion other pipes connected with thesteampipes, and adapted to receive therefrom the water of condensationwhilein a heated con 1 dition, whereby the heating capacity of the,steam is supplemented by the heating capacity of the water condensedfrom the steam.

I carry my invention into effect by using,

in addition to the ordinary pipes for maintaining steam-circulation inthe cars, additional pipes, preferably of larger bore, arranged toreceive the hot water formed by the condensation of the steam from thesteampipes or pockets arranged therein to receive it, and to cause it tobe circulated throughout the car, thereby obtaining, in addition to theamount of heat given off by the circulation of the direct steam, theheat caused by the circulation of the hot water of condensation, whichfor heating purposes is preferable to steam.

There are many ways by which .my invention maybe carried into effect,and in the drawings I have illustrated but one of them.

Referring to the drawings, Figure 1 is a view in side elevation of a carhaving the features of my invention, portions of one side being removedto show the pipes and connections of the system. Fig. 2 is a view inhorizontal section of a car, taken immediately above the pipes of thesystem. Fig. 3 is a view in elevation, and Figxl is a plan, of sectionsof the pipes enlarged. Fig. 5 is a view the car, there extends across-pipe a the ends of which extend upward through the flooring of thecar and connect with the steam-dis tributing pipesa and I haverepresented this connection as made through a trap B.

This trap affords or provides a pocket for the water of condensation,and also for the connection with the distributing-pipes b of thehot-water distribution, and theremay be similar pockets and traps at theother ends of the steam-distributing pipes a and in any other placescovered by them. These pockets or traps discharge their contents'iutothe hot- Waterdistributing pipes 19, and" this may be accomplishedautomatically or by-hand. I have illustrated as one means of making aconnection automatically a thermostatic trap C, which comprises a casing0, divided by a horizontal diaphragm 0' into the receiving chamber a andthe discharge-chamber 0 The upper chamber 0 connects with the Sosteam-distributing pipes and the hot water from the condensation ofsteam flows from the steam-pipesinto this chamber, which makes a pocketor reservoir for receiving it,

and it automatically escapes from said chamher through the passage 0 inthe hollow valve 0 the lower edge of which is adapted to be brought incontact with the seat 0, upon the expansion of liquid in the chamber 0',acting through the flexible diaphragm, due to the 0 presence of livesteam in chamber 0 Then the chamber is partially filled with water, thevalve-seat drops from the valve to form a narrow passage which permitsthe hotwater to flow through the passage 0 and holes or openings cTinto.a pipe c 'connecting with the hotwater-distributing pipe. (See Fig.5.) Iwould say, however, that I do not confine myselfto this particular form.of connection between the steam-distributing and hot-water-distribzoouting pipes, but may use anyother automatic device or connection.

The hot water is held in the hot-water pipes by a thermostatic or othertrap or by cocks.

I prefer to use at the end of the hot-water pipe' the form ofthermostatic trap above specified to check or keep back the Water in thehot-water pipe. The trap of this character can be used at the outlet ofthe hot-water pipe, which is the disoharge-pipe in this system,beoauseit is never subjected to extreme heat and pressure from the steam, as isthe casein systems. now in use. Therefore the discharge trap at theoutlet of the hot water pipe may be opened so as to maintain a constantflow of water at that point at any desired temperature, and when so setit isnot liable to freeze. Of course, the hot-water pipe may have notrap to the outlet; butloonsider it advisable to locate one there. Itwill be seen that in any method of car-heating by steam heretofore used,the circulating-pipes used for the steamcirculation have been the onlymedium whereby the condensation has been got-ten rid of, as thecondensation in car-heatin g is very rapid. Particularly in the rear carof the train the condensed Water is cooled rapidly in the steam-pipes,thereby ob-' structing the steam-passage and greatly delaying theheating of the car. In this system the water is entirely removed fromthe steamcirculat-ing pipe and contained in the waterpipes below untilit has parted with its heat, and is then discharged, thusallowing thecars to be heated very quickly and without appreciable Waste of heat.This results in providing the utmost economy possible by use of all theavailable heat from both steam and water; also, in the rapid heating ofthe cars because of the perfect removal of the condensed wa ter from-the steam-pipes; also, in the greatlyreduced liability of freezing atthe outlet of the discharge-pipe, as a constant flow of water can bemaintained at that point by the use of a thermostatic valve, withoutwaste.

The advantages arise, first, from the economy in the use of a givenamount of steam resulting from it, and, second, from the increasedheating eitect obtained from a given quantity of live steam.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States 1. The combination, in a systemfor heating cars by steam and hot Water, of one or moresteam-distributing pipes, one or more hot- Water-distributing pipes, andan automatic discharging device for discharging the condensed steam fromthe steam-distributing pipe or pipes to the hot-water-distributing pipeor pipes, substantially as described.

2. The combination, in a system for heatin g cars by steam and hotwater, of one or more steam-distributing pipes, one or morehot-water-distributin g pipes, a disohargingrconnection containing anautomatic valve or device between the steam pipe or pipes andthehotwater pipe or pipes for discharging the condensed steam from thesteam-pipes into the hot-Water pipes, and an automatic valve at theoutlet of the hot-water pipe, substantially as described.

3. The combination, in a system for heating cars, of one or moresteam-distributing pipes, a hot-Water-discharge pipe connected therewithand by means of an automatic valve, said valve, and an automatic valveat the outlet of the hot-water pipe, as and for the purposes described.

RICHARD D. KI'MBALL.

Witnesses:

F. 'F. RAYMOND, 26, J. M. DOLAN.

